SYSTEM ZU EINER NICHTTRAUMATISCHEN ZAHNWURZELKANALBEHANDLUNG FUER DEN WIEDERAUFBAU EINES ZAHNES

The invention achieves its purposes with a grommet thimble (10) incorporating a bore sleeve which may be fitted with retainer means (44) for a sanitary dam (62). When this thimble (10) is fitted into the specially-prepared entrance portion of a root canal (12), the retainer means (44) extends from the tooth for holding a dam of rubber or the like without injury to surrounding gingiva during placement of a clamp (48) for the rubber dam. The root canal (14) can be prepared with the sleeve and dam in place, the sleeve and dam serving to facilitate the establishment and maintenance of a sterile field of operation without creation of unnecessary lacerations on the surrounding gingiva. After completion of the desired preparation procedure, or of partial completion, a temporary plug can be removably fitted into the sleeve protection of the work done or in process. For completion of a restoration several options are available. The retainer means can be left in place and used to anchor a core with or without a post. Alternatively a post can be fastened (e.g. screwed) into the sleeve, with or without keeping the retainer means.